Hi,
The submenus don’t have distinct typography options, but most visual details can be tweaked with CSS:
.sub-menu li a span {
font-family: ...;
font-size: ...;
font-weight: ...;
text-transform: ...;
}
The distance between the bottom edge of the header image and the section title (when the breadcrumbs are not active, since they are located in that same space) is created by a couple of element paddings/margins:
body .main .entry-title {
padding-top: .5em;
}
body #container:not(.septera-landing-page) .main {
padding-top: 2em;
}
Included above are the default values, which you can adjust as necessary.